Newman/Haas Racing

Unlock all challenges and 4 bonus tracks:
At the main menu, hold L1 + R1. Then, press Left 1 time, Right 7 times & Left 15 times.

Race with double deckers:
At the main menu, hold L1 + R1. Then, press Left 3 times, Right 15 times, Left 3 times, Right 11 times, Left 14 times, Right 5 times & Left 25 times.